I note there has been a little discussion of Dublin Core metadata.
Thus far, we have had no difficulty implementing this schema
in htdig.

However, we would like to create a custom display template, which
could display certain DC fields. For example, authors if any exist
(in some subject fields, who authors a document is often more important than
its title, contents etc).

Looking through the supplied variables which can be included in
templates, I could not see any way of including the value of
the keywords_meta_tag_names in a template.